Results 171 to 180 of about 189,448 (311)

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source

The Near-infrared Tip of the Red Giant Branch. I. A Calibration in the Isolated Dwarf Galaxy IC 1613 [PDF]

, 2018
Barry F. Madore, Wendy L. Freedman, Dylan Hatt, Taylor J. Hoyt, Andrew Monson, Rachael L. Beaton, J. Rich, In Sung Jang, Myung Gyoon Lee, Victoria Scowcroft, Mark Seibert   +10 more
openalex   +1 more source

Fascinating single‐cell red algae: models for evolution and adaptation

New Phytologist, EarlyView.
Summary The unicellular red algae, Cyanidiophyceae, that diverged early during Archaeplastida (algal and plant) evolution, occupy a variety of extreme habitats that are inhospitable for most other eukaryotes. With the use of modern genomics and genetics methods, Cyanidiophyceae show a remarkable taxonomic diversity, share haplodiplophasic life cycles ...
Frédéric Berger, Debashish Bhattacharya, Chung Hyun Cho, Seok‐Wan Choi, Julia Van Etten, Shunsuke Hirooka, Tzu‐Yen Huang, Kyle J. Lauersen, Yongsung Lee, Shao‐Lun Liu, Shin‐ya Miyagishima, Stephen D. Rader, Daniel Schubert, Hwan Su Yoon   +13 more
wiley   +1 more source

Understanding post-red giant branch binaries through stable mass transfer

Astronomy & Astrophysics
Context. Post-red giant branch (post-RGB) and post-asymptotic giant branch (post-AGB) binaries consist of a primary star that has recently evolved off either the RGB or AGB after losing the majority of its envelope and a main-sequence companion.
C. A. S. Moltzer, O. R. Pols, H. Van Winckel, K. D. Temmink, M. W. Wijdeveld   +4 more
openaire   +2 more sources

Concurrent Measurement of O2 Production and Isoprene Emission During Photosynthesis: Pros, Cons and Metabolic Implications of Responses to Light, CO2 and Temperature

Plant, Cell &Environment, EarlyView.
ABSTRACT Traditional leaf gas exchange experiments have focused on net CO2 exchange (Anet). Here, using California poplar (Populus trichocarpa), we coupled measurements of net oxygen production (NOP), isoprene emissions and δ18O in O2 to traditional CO2/H2O gas exchange with chlorophyll fluorescence, and measured light, CO2 and temperature response ...
Kolby Jeremiah Jardine, Suman Som, Luiza Beraldi Gallo, Jilian Demus, Tomas Ferreira Domingues, Christina Marie Wistrom, Lianhong Gu, Guillaume Tcherkez, Ülo Niinemets   +8 more
wiley   +1 more source

Anomalously Fast Core and Envelope Rotation in Red Giants

The Astrophysical Journal
Red giants undergo dramatic and complex structural transformations as they evolve. Angular momentum is transported between the core and envelope during this epoch, a poorly understood process.
Siddharth Dhanpal, Othman Benomar, Shravan Hanasoge, Jim Fuller   +3 more
doaj   +1 more source

Effects of Meloidogyne incognita on agronomic parameters and structural changes in eggplant (Solanum gilo Raddi) roots treated with Purpureocillium lilacinum

Plant Biology, EarlyView.
Meloidogyne incognita impairs eggplant growth through gall formation with changes in root cell wall components and vascular tissue disruption, while the biocontrol agent Purpureocillium lilacinum mitigates these effects by reducing nematode infection. Abstract Meloidogyne spp. induce structural changes during the development of root‐knot galls, leading
R. M. I. F. Vilela, V. C. Kuster, A. A. de Souza, V. C. Martini, T. A. Magalhães, R. M. dos Santos Isaias, D. C. de Oliveira   +6 more
wiley   +1 more source

Evidence of Third Dredge-up in Post-AGB Stars in Galactic Globular Clusters

The Astrophysical Journal
To better understand the mixing and mass loss experienced by low-mass stars as they ascend the asymptotic giant branch (AGB), I have gathered from the literature the abundances of CNO and s -process elements in post-AGB stars in Galactic globular ...
William V. Dixon
doaj   +1 more source

The Tip of the Red Giant Branch Distance Ladder and the Hubble Constant [PDF]

Siyang Li, Rachael L. Beaton
openalex   +1 more source

Distances from the tip of the red giant branch to the dwarf galaxies dw1335-29 and dw1340-30 in the Centaurus group [PDF]

, 2018
Oliver Müller, Marina Rejkuba, Helmut Jerjen   +2 more
openalex   +1 more source